f 



THE BRAIN. 



507 



finally in the cerebral cortex. We may safely assume that the 

 part played by the latter is of very great importance, making 

 the perception assume that highest completeness which is of 



FiQ. 363.— Diagrammatic representation of brain on transverse section to lllnstrate 

 course of fibers (after Landois). C, C, cortex cerebri; C. s, corpus Btriatum; i^, /, 

 lenticular nucleus; T.o, optic thalamus; P, peduncle; H, tegmentum; p, crusta; 

 V, corpora quadrigemina; 1, 1, corona radiata of corpus striatum; 2, 2, of lenticu- 

 lar nucleus; 3, 3j of optic thalamus; 4, 4, of corpora quadrigemina; 5, direct fibers 

 to cortex cerebri (Flechsig); 6, 6, fibers from corpora quadrigemina to tegmentum; 

 m, further course of these fibers; 8, 8, fibers from corpus striatum and lenticular 

 nucleus to crusta of peduncle of cerebrum ; M, further course of these; S, 8, course 

 of sensory fibers; H, transverse section of spinal cord; v. W, anterior, and h. W, 

 posterior roots; a, a, system of association fibers; c, c, commissural fibers. 



